Superconductivity with topological surface state in SrxBi2Se3

Zhongheng Liu; Xiong Yao; Jifeng Shao; Ming Zuo; Li Pi; Shun Tan; Changjin Zhang; Yuheng Zhang

doi:10.1021/jacs.5b06815

Superconductivity with topological surface state in SrxBi2Se3

Superconductivity 2015-09-01 v2

Authors: Zhongheng Liu , Xiong Yao , Jifeng Shao , Ming Zuo , Li Pi , Shun Tan , Changjin Zhang , Yuheng Zhang

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Abstract

By intercalation of alkaline-earth metal Sr in Bi2Se3, superconductivity with large shielding volume fraction (~91.5% at 0.5 K) has been achieved in Sr0.065Bi2Se3. The analysis of the Shubnikov-de Hass oscillations confirms the 1/2-shift expected from a Dirac spectrum, giving transport evidence of the existence of surface states. Importantly, the SrxBi2Se3superconductor is stable under air, making the SrxBi2Se3 compound an ideal material base for investigating topological superconductivity.

Keywords

superconductivity topological insulators dirac cones and topological phases

Cite

@article{arxiv.1502.01105,
  title  = {Superconductivity with topological surface state in SrxBi2Se3},
  author = {Zhongheng Liu and Xiong Yao and Jifeng Shao and Ming Zuo and Li Pi and Shun Tan and Changjin Zhang and Yuheng Zhang},
  journal= {arXiv preprint arXiv:1502.01105},
  year   = {2015}
}

Comments

12 pages, 4 figures, Accepted by J. Am. Chem. Soc. http://pubs.acs.org/doi/abs/10.1021/jacs.5b06815

Superconductivity with topological surface state in SrxBi2Se3

Abstract

Keywords

Cite

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